Portable display device



FIG. 1 is a front oblique view of the portable display device showing our new design in an open position;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is an oblique view illustrating an inner screen deployed on a reverse side of FIG. 1; and,

FIG. 9 illustrates a state in which the portable display device is folded into a closed position and is being used as a mobile phone.

Screen units providing visual display devices are formed on an outer side and an inner side of the item, respectively.

The broken lines in the drawings are shown for illustrative purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a portable display device, as shown and described. 